Specifications

Counter/Timers (8254)
Table 11-2
Gate Pin Operations Summary.
Signal Low
Status or Going Rising High
Modes Low
0 Disables —— Enables
Counting Counting
1 —— 1. Initiates ——
Counting
2. Resets Output
after Next
Clock
2 1. Disables
Counting Initiates Enables
2. Sets Output Counting Counting
Immediately
High
3 1. Disables
Counting Initiates Enables
2. Sets Output Counting Counting
Immediately
High
4 Disables —— Enables
Counting Counting
5 —— Initiates ——
Counting
11-22